Home loans gone bad are wrecking the U.S. The fallout begins on Wall Street, where billions of dollars in American mortgages were bought, bundled ...CNN teams up with Fortune Magazine's Andy Serwer to investigate how the housing boom went bust. economy. There are always two sides to every coin. As with all things, online mortgages, for all their many benefits, do have a certain disadvantage. And this certain disadvantage is enough to cause some people from engaging in such. Because part of the transaction is done online, people are hesitant to pursue online mortgages.